DeltaV Adapt
DeltaV Product Data Sheet
January 2013 – Page 1
Continuous Closed Loop Adaptive Control
DeltaV™ Adapt
Continuous Closed Loop Adaptive Control
DeltaV Adapt provides continous adaptive control for any DeltaV PID control loop.
 Better control for non-linear processes
 Adaptive tuning with no process disruption
 Fast response to changing conditions
 Easy to use with any PID control loop
Introduction
One day the control works great; the next day (or night)
you receive a phone call about a critical loop that has
gone unstable. Unfortunately, most control engineers have
experienced non-linear processes that cause problems for
traditional PID control. With DeltaV™ Adapt, you may
never have to re-tune that problem loop again.
All process variables and control valves are non-linear to
some degree. Many non-linearities are inherent in the
process; resulting from changing product specifications,
www.DeltaV.com
production rates, or other operating conditions. As a result,
many loops have to be detuned (backed off from
maximum performance) to provide stable control during all
process conditions.
DeltaV Adapt continuously adjusts PID tuning for optimal
control as process conditions change. In addition to
calculating new tuning, DeltaV Adapt also remembers the
best tuning from the last time it was controlling in the same
operating region. And best of all, DeltaV Adapt can be
applied to any PID loop in the control system – without
control configuration changes.
DeltaV Adapt is available as an add-on product for DeltaV
InSight, a control performance monitoring and tuning
product. DeltaV InSight includes embedded process
learning to calculate process models without disruptive
plant tests. With DeltaV Adapt, you can now use these
process models for continuous closed loop adaptive
control for any PID function block.
DeltaV Adapt
DeltaV Product Data Sheet
January 2013 – Page 2
Continuous Closed Loop Adaptive Control
Benefits
Better control for non-linear processes. Properly
tuned loops can decrease process variability and increase
profits through improved product quality, throughput, and
equipment availability. DeltaV Adapt continuously updates
tuning parameters for any PID loop for optimal control of
non-linear or changing process conditions.
Adaptive tuning with no process disruption.
DeltaV Adapt provides optimal tuning based on past
changes the operator makes during normal day-to-day
operations. No additional plant tests are required.
Fast response to changing process conditions.
DeltaV Adapt will quickly adjust tuning for different
operating conditions because it remembers the best tuning
for each region of operation. Most adaptive controllers
have to relearn the process when operating conditions
change, even when they’ve seen similar conditions many
times before.
Easy to use with any PID control loop. DeltaV
Adapt is embedded in the DeltaV control system to
improve both ease-of-use and calculation performance.
It’s easy to use because there is NO additional software to
install, NO additional configuration required, NO data
integration, and NO new databases or user workstations.
Adapt software comes pre-installed on every DeltaV
system, uses the standard DeltaV configuration and
process historian database, and runs in existing
workstation and controller nodes. DeltaV Adapt also runs
with existing PID controllers, which means no
configuration changes or module downloads are required
to implement adaptive control.
Product Description
Adapt provides closed loop adaptive control for DeltaV
resident PID function blocks, and is available as an add-on
to DeltaV InSight, a control performance monitoring and
loop tuning product. (See DeltaV InSight product data
sheet for more information.)
DeltaV Adapt incorporates a new and enhanced modelbased approach to on-line adaptive control; utilizing
DeltaV’s embedded process learning which identifies
process models from normal day-to-day operation.
DeltaV Adapt uses these process models to calculate
optimal tuning, and remembers the best tuning for different
regions of operation. This model-based approach provides
fast adaptation during changing conditions, and provides
users with familiar tuning rules for defining desired control
performance. And best of all, the embedded process
learning and adaptive control can be implemented on any
DeltaV resident PID block without control configuration
changes.
DeltaV Adaptive Control
Embedded Process Learning
DeltaV uses learning algorithms embedded in the
controller to calculate process models and diagnostics for
every control loop in the system. DeltaV calculates
process models based on process changes made by the
operator or automated procedures such as batch control
sequences. Whenever there is a change in the setpoint (or
output when controller is in manual), DeltaV captures the
process input and output data and performs an efficient
calculation to identify process dynamics. These process
models are stored in a database for engineers to evaluate
and analyze for potential process non-linearities. These
process models also provide the basis for DeltaV adaptive
control.
Process learning is easily enabled from DeltaV Explorer or
DeltaV InSight for individual control modules or entire
controller nodes. No control configuration changes or
module downloads are required to enable process
learning.
Model Analysis
A model analysis display in DeltaV InSight enables control
engineers to inspect the process models calculated for
each control loop. Using this tool, an engineer can
evaluate performance over time and identify potential
process non-linearities and degradations caused by such
factors as fouling of catalysts, heat transfer surfaces, and
sensors. The model analysis includes X-Y plots of the
model parameters vs. time, quality, PV, OUT, or other
process variables. The models are also easily copied and
pasted into Microsoft Excel for additional data analysis.
DeltaV Adapt
DeltaV Product Data Sheet
January 2013 – Page 3
Continuous Closed Loop Adaptive Control
For maximum flexibility, DeltaV Adapt enables PID blocks
to operate in one of three adaptive control modes:

Full Adaptive Mode – Continuously adjusts tuning
parameters based on the last good model calculated
for each operating region.

Partial Adaptive Mode – Adjusts tuning parameters
only when operating regions change, and only using
process models that have been approved for each
region.

Learn Only Mode – Process learning and adaptive
tuning recommendations are calculated for each
operating region but no tuning parameter changes are
written to the on-line PID block.
Improvements in Reliability and Robustness
Emerson’s approach to adaptive control provides several
key advantages which improve reliability and robustness.
Non-linear Process Model Analysis

For adaptive control, models may be grouped into five
different operating regions. These regions can be defined
by OUT or PV range, or from other process variables in
the system. From the model analysis display, a control
engineer can easily plot models, define region boundaries,
approve models for each region, and set limits to constrain
the model identification and tuning parameters.
Diagnostics from Foundation Fieldbus and Hart
devices are utilized so that no process models or
tuning parameters will be calculated using faulty
devices.

Process models and tuning are only calculated from
known trigger events; that is, setpoint changes or
output changes when loop is in Manual mode. DeltaV
adaptive control does not rely on pattern recognition,
and will not induce oscillations to help learn process
dynamics.

Model identification is based on an iterative search
algorithm that starts with the last good model and
imposes limits on how much the model can change
per trigger event. New models are not based on a
single set of process data which may result in
erroneous results. Furthermore, model quality is
calculated using a number of factors including signalto-noise ratio, quality of fit, convergence of search,
and variability of prior model calculations. Only highquality models are utilized for adaptive control.

Tuning calculations are predictable based on process
models using well know tuning rules.
Adaptive Tuning
DeltaV adaptive tuning is available for all PID blocks that
have embedded process learning enabled. Each time a
new model is identified; adaptive tuning provides optimal
tuning parameters based on the desired tuning criteria.
Before these new models are used for tuning, they are
validated using identification quality metrics that take into
account factors such as signal / noise ratio, model error,
convergence, and variability. Tuning parameters are
automatically calculated for validated models based on
Lambda or IMC tuning rules. A tuning index provides the
predicted % change in variability for the new tuning
parameters and is used to indicate when a loop should be
returned. These adaptive tuning calculations are used for
both advisory tuning recommendations and for closed loop
adaptive control.
Closed Loop Adaptive Control
With DeltaV Adapt, PID tuning parameters can be updated
automatically on-line for closed loop adaptive control. For
example, when the process changes from one operating
region to another, DeltaV Adapt automatically updates the
control loop with the best tuning parameters identified for
those operating conditions. Or when process conditions
change slowly overtime, DeltaV Adapt can continuously
adjust tuning to compensate for process changes.
Licensing
DeltaV Adapt is licensed per PID block. Adapt licenses for
PID blocks may be ordered, assigned to the ProPlus
workstation and accumulated in the DeltaV system
database. This total number of Adapt licenses is then
decremented whenever you assign an Adapt license to a
PID function block. The licenses may be assigned to any
PID block within the DeltaV system. Adapt licenses are
sold in quantities of 1, 10, and 100 as described below.
DeltaV Adapt
DeltaV Product Data Sheet
Continuous Closed Loop Adaptive Control
January 2013 – Page 4
Ordering Information
Description
Model Number
DeltaV Adapt for 1 function block
VE3155F0001
DeltaV Adapt for 10 function blocks
VE3155F0010
DeltaV Adapt for 100 function blocks
VE3155F0100
Related Products
Prerequisites


DeltaV v10.3 software or later

DeltaV InSight is a required prerequisite for DeltaV
Adapt. DeltaV InSight is licensed for system-wide
unlimited client connections. A full InSight license is
required (VE2134Sxxxxx for pre-v12.3,
VE9140Sxxxxx for v12.3 and later). InSight Basic
(VE2134BASIC) is not adequate for use with DeltaV
Adapt. See DeltaV InSight product data sheet for
ordering information.
DeltaV InSight. Control performance monitoring
and loop tuning application embedded in DeltaV.
Identifies control problems and improves control
performance with automatic process learning, loop
diagnostics, on-demand and adaptive tuning, and
automatic report generation.
To locate a sales office near you, visit our website at:
www.EmersonProcess.com/DeltaV
Or call us at:
Asia Pacific: 65.6777.8211
Europe, Middle East: 41.41.768.6111
North America, Latin America:
+1 800.833.8314 or
+1 512.832.3774
For large power, water, and wastewater applications
contact Power and Water Solutions at:
www.EmersonProcess-powerwater.com
Or call us at:
Asia Pacific: 65.6777.8211
Europe, Middle East, Africa: 48.22.630.2443
North America, Latin America: +1 412.963.4000
© Emerson Process Management 2013. All rights reserved. For Emerson Process Management trademarks and service marks, go to:
http://www.emersonprocess.com/home/news/resources/marks.pdf.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warrantees or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed
by our terms and conditions, which are available on request. We reserve the right to modify or improve the design or specification of such products at any time
without notice.
www.DeltaV.com